From dcfefdb81c2e4d8512157dba3bde81b722f7633c Mon Sep 17 00:00:00 2001
From: David Millar-Durrant <dmillardurrant@gmail.com>
Date: Tue, 18 Apr 2023 13:46:08 +0100
Subject: [PATCH] Added a nix dev env for faster integration tests

---
 .envrc     |   2 +
 README.md  |   6 +++
 flake.lock | 130 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 flake.nix  |  29 ++++++++++++
 4 files changed, 167 insertions(+)
 create mode 100644 .envrc
 create mode 100644 flake.lock
 create mode 100644 flake.nix

diff --git a/.envrc b/.envrc
new file mode 100644
index 000000000..60dc4cf21
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,2 @@
+use flake 'github:DavidM-D/workspaces?dir=rust'
+use flake .
diff --git a/README.md b/README.md
index 90a11ef38..36a54d01e 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,12 @@ git submodule update --init --recursive
 docker build . -t near/mpc-recovery
 ```
 
+alternatively if you have [nix](https://nixos.org/) and [direnv](https://direnv.net/) installed, you can set up a development environment by running:
+
+``` BASH
+direnv allow
+```
+
 Run tests with:
 ```
 cargo test -p mpc-recovery
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 000000000..48a6d238d
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,130 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1681648924,
+        "narHash": "sha256-pzi3HISK8+7mpEtv08Yr80wswyHKsz+RP1CROG1Qf6s=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "f294325aed382b66c7a188482101b0f336d1d7db",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1681358109,
+        "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay"
+      }
+    },
+    "rust-overlay": {
+      "inputs": {
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1681697975,
+        "narHash": "sha256-47DFtN5PX05eD8ObImkSu2W0hyyZ5cK1Tl9EvmW2NnU=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "ffe47b90076067ad5dc25fe739d95a463bdf3c59",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 000000000..a21d43f19
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,29 @@
+# This is a simple deterministic rust development environment
+# This exposes Cargo, rustfmt, rust-analyzer and clippy
+# This does not allow you to build binaries using nix
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    rust-overlay.url = "github:oxalica/rust-overlay";
+  };
+  outputs = { self, nixpkgs, flake-utils, rust-overlay, ... }:
+
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        overlays = [ (import rust-overlay) ];
+        pkgs = import nixpkgs { inherit system overlays; };
+
+        # Pick what rust compiler to use
+      in {
+        devShell = pkgs.mkShell {
+
+          # Everything in this list is added to your path
+          buildInputs =
+            with pkgs; [
+              darwin.apple_sdk.frameworks.Security
+              protobuf
+            ];
+        };
+      });
+}